(1)Where the local housing authority have approved an application for a grant, they shall pay the grant, subject to subsection (3) below and to sections 133 and 134 below.
(2)The grant may be paid—
(a)in whole after the completion of the eligible works, or
(b)in part by instalments as the works progress and the balance after completion of the works.
(3)The payment of a grant, or part of a grant, is conditional upon—
(a)the eligible works or the corresponding part of the works being executed to the satisfaction of the authority; and
(b)the authority being provided with an acceptable invoice, demand or receipt for payment for the works and any preliminary or ancillary services and charges in respect of which the grant or part of the grant is to be paid.
(4)For the purposes of subsection (3) above an invoice, demand or receipt is acceptable if it satisfies the authority and is not given by the applicant or a member of his family.
(5)Where a grant is paid by instalments, the aggregate of the instalments paid before the completion of the eligible works shall not at any time exceed nine-tenths of the amount of the grant.